You finalize "the list" about a week to 10 days before PIR, so you will be able to fix it if you know by then. Also thats the time where you can "borrow" a shipmates guest spot if they have an extra. A few guys only had 3 people coming so the guys with 5 coming just put the 5th down on a shipmates extra slot (with their permission of course) your guest just need to be sure they know your shipmates name because they are listed under them.
|